NAME

srec_tektronix - Tektronix hexadecimal file format

DESCRIPTION

The Tektronix hexadecimal file format is no longer very common. It
serves a similar purpose to the Motorola and Intel formats, usually
used to transfer data into EPROM programmers.
TheLines
Most Tektronix hex files contain only Tektronix hex lines (see the next
section), which always start with a slash (“/[rq]) character. There
are only two types of lines - data lines and a termination line.
DataLines
Data lines have five fields: address, length, checksum 1, data and
checksum 2. The lines always start with a slash (“/[rq]) character.
+--+---------+--------+-----------+------+-----------+
|/ | Address | Length | Checksum1 | Data | Checksum2 |
+--+---------+--------+-----------+------+-----------+
Address This is a 4 character (2 byte) address that specifies where the
data in the record is to be loaded into memory.
Data Length
The data length field is a 2 character (1 byte) field that
specifies the number of character pairs (bytes) in the data
field. This field never has a value of zero.
Checksum 1
The checksum 1 field is a 2 character (1 byte) field. Its
value is the 8‐bit sum of the six 4‐bit values which make up
the address and length fields.
Data The data field contains character pairs (bytes); the number of
character pairs (bytes) is indicated by the length field.
Checksum 2
The checksum 2 field is a 2 character (1 byte) field. Its
value is the least significant byte of the sum of the all the
4‐bit values of the data field.
TerminationLine
Termination lines have three fields: address, zero and checksum. The
lines always start with a slash (“/[rq]) character.
+--+---------+------+----------+
|/ | Address | Zero | Checksum |
+--+---------+------+----------+
Address This is a 4 character (2 byte) address that specifies where to
begin execution.
Zero The data length field is a 2 character (1 byte) field of value
zero.
Checksum
The checksum 1 field is a 2 character (1 byte) field. Its
value is the 8‐bit sum of the six 4‐bit values which make up
the address and zero fields.
SizeMultiplier
In general, binary data will expand in sized by approximately 2.4 times
when represented with this format.

EXAMPLE

Here is an example Tektronix hex file. It contains the data “Hello,
World[rq] to be loaded at address 0.
/00000D0D48656C6C6F2C20576F726C640A52
/00000000

COPYRIGHT

srec_cat version 1.55
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
2007, 2008, 2009, 2010 Peter Miller
The srec_cat program comes with ABSOLUTELY NO WARRANTY; for details use
the ’srec_cat-VERSionLicense’ command. This is free software and you
are welcome to redistribute it under certain conditions; for details
use the ’srec_cat-VERSionLicense’ command.